San Marino is a city in Los Angeles County, California, United States. It was incorporated on April 25, 1913. At the 2020 United States census the population was 12,513, a decline from the 2010 United States census.

Benjamin Davis Wilson, commonly known as Don Benito Wilson, was an American-Mexican politician, fur trapper, and ranchero of California. Born in Tennessee, Wilson eventually settled in Alta California when it was part of the Republic of Mexico, and acquired Rancho Jurupa. He became a naturalized Mexican citizen and married into a prominent Californio family.